Parallax Candidates

If you are considering using a parallax library, here are some candidates:

I needed one for some simple parallactic scrolling. The two with stars were good candidates. In a particularly heavy page, Rellax performed better than Fallings, particularly in Firefox (where both were a little choppy, and the rubber band effect was exaggerated while using Fallings). Both were good otherwise. I am fairly confident that the problem is chiefly a problem with Firefox.